Filling inlet for containers, especially for hot-water bottles and the like



July 24, 1953 R. AITKEN FILLING INLET FOR CONTAINERS ESPECIALLY FOR HOT WATER BOTTLES AND THE LIKE Filed May 25, 1949 2 SheetsSheei. l

July 24, 1951 R AITKEN 2,562,010

FILLING INLET FOR CONTAINERS ESPECIALLY FOR HOT WATER BOTTLES AND THE LIKE 2 Sheets-Sheet 2 Filed May 25, 1949 Patented July 24, 1951 UNlTE D' I Q FILLING INLET CIALLY FOR HOT-WATER BOTTLES AND THE LIKE.

Roy 'Aitken, Glasgow, Scotland Application May. 25, 1949, Serial No. 95,178 In Great Britain June 21, 1948,

This invention relates to filling conduits for incorporation in hot-water bottles'or bags (herein'after and in the claims referred tosimply as "fbottle). 1

In accordance with the present invention a con- {1 duit for incorporation in a hot-water bottle has an inlet opening and at least one separate outlet opening (hereinafter called the ,blow-ofgopeni'n'g whereby air and/or steam displaced from within the bottle during fillingthereof canescape without interfering with the flow of filling water, said openings being arranged and adapted for healing by a common closure plug when desired.

', Preferably the closure plug isa screw-closure and is provided with a seat which positively closes the bottle against leakage through'either opening. v v

7 As a result of the invention, the bottle'may 'Zbe filled quickly, for example with boiling water,

(and bubbling or spluttering owing to air and/or steam trying to escape through the inflow of boiling water is eliminated or mitigated.

1 In order that the invention may be more [clearly understood, the following more specific embodiments will now be described, by way of ex- :ample, with reference to the accompanying draw- .ings, in which- Fig. 1 is a perspective view from above and to one side of a filling conduit according to the inw vention; Fig. 2 is a side elevation, and Fig. 3 an in- ,verted plan view of the conduit Fig. 4 is a vertical transverse sectional elevation .to a smaller scale of the conduit, the location of a closure plug fitted thereto being indicated in dot-dash lines; Fig. 5 ;is a .view in elevation of a closure plug suitable for fitment to the conduit shown in Figs. 1 to 4; and Figs. 6 to 8 are vertical transverse sectional ,elevations of modified forms of conduit, part of a bottle being indicated in dot-dash lines in Figofi. Referring to Figs. 1 to 4 of the drawings, the filling conduit comprises an inner tubular inlet H and an outer substantially tubular member! 2. The inlet H is screw-threaded internally at its ;lower end as indicated at l3, and projects below 9 Claims. (01. 150-8) The position occupied by a closure plug when screwed intosealin position in the conduit is indicated in Fig. 4. Such a closure plug is shown in Fig. 5 and comprises a central screw-threaded part 2| adapted to engage the screw-threaded part l3 of the inlet, and a peripheral seat part 22 provided with a washer 23 of rubber or other packing material and adapted to seat on the annular seat I6 of the conduit and positively close the openings l5.

In filling a hot-water bottle fitted with a filling conduit 'as described, hot or boiling water is poured through the inlet I I and the air displaced from within the bottle, together with the steam entrained therewith, escape through the arcuate or blow-off openings l5 and do not therefore securing; of the conduit in the mouth of a bottle,;-

for example a rubber hot-water bottle.

interfere with the flow of filling water. Bubbling or spluttering is thus largely eliminated or mitigated.

In the modification shown in Fig. 6, the inner face 25 of the inlet wall 26 tapers inwardly and downwardly to form a conical seat. The inlet isscrew-threaded internally at its lower part at 21, and is provided at its upper end with'a horizontal annular seat 28 around which is an upstanding peripheral flange 29. Blow off openings 30 are provided inthe inlet wall 26 and extend upwardly from the base thereof to about two-thirds of the height of the wall. Thereafter they are angled inwardly towards the inner face 25 and pass therethrough at an angle depressed from the horizontal, so as to tend to prevent water entering the bottle through them, and so as also to direct any jets of blowing-off air or steam in a direction other than vertically upwards,

In Figs. land 8 respectively the upper periphcry of the inlet is on a level below and above that of the blow-off openings 46. v

The conduits shown in Figs. 6 to 8 inclusive are adaptedfor closure by closure plugs having a .central screw-threaded part and an annular seat part, .the particular design of the closure plug being modified to suit requirements.

11 claim:

1. For, incorporation in a hot-water bottle, a

- fi 11ing conduit comprisin an inner wall member 'of closed formation provided with internal screwthreads at least at its lower part and defining an opening, an outer wall member of closed formation surrounding said inner wall member said-inner wall member and bridging the space between said members, and an annular seat 2. For incorporation in a hot-water bottle,-':t-a'

filling conduit comprising aninner wall member g of closed formation provided with int'e r n'alscrewev threads at least at its lower part and defining an opening, an outer Wall member of closed formation surrounding said inner wall m'eniber and spaced therefrom, a plurality of connecting .ele-.

ments spaced around the outer perime'tenoff'said inner wall member and bridging the space be- 4 close said opening and a peripheral seat part having a washer of resilient material on its underside and adapted to engage over said annular seat part and seal said space.

5. For incorporation in a hot-water bottle, a filling conduit comprising a central inner memsber-of@closed circular fonmation provided with initernal screw-threads at least at its lower part and defining an opening, an outer wall member of closed circular formation surrounding and overtopping said inner wall member in spaced re- "-l'aftionship, relative thereto, a plurality of spaced connecting elements disposed radially with respect to said inner wall member and bridging the space between said members, an annular seat around the upper periphery of said outer wall member, "and an upstanding flange around the tween said members, an annular seat around the upper periphery of said outer wall member, and :an upstanding peripheral flange around the outer-perimeter of said annular seat, the space (between said members being adapted toallow iescape of air and :steam displaced .from within a bottle in which the filling conduit is incorporated vwhen hot water is poured into the bottle through said-opening, and said screw-threads and-annu- .lar seat being adapted to permit-sealingof :said space 'andfsaid opening by a single closure ,-plug when desired. j

:fillingconduitcomprising a central inner mem- ::ber of closed circular formation provided with ,internal screw-threads at least at its lower parit sand defining an opening, an :outer wall -member of closed circular formation surrounding said inner .w'all member in spaced relationship .relaitive thereto and presenting an upwardly-convergent inner wall surface towards the outer wall ..,surfaceof saidinner wall member, .a plurality of rci-rcumferentially-spaced connecting elements bridging the lspacenbetween the. adjacent wall surfaces of said wall linemberstoldefine Va .plu- Vrality ofrupwardlyeconvergent arcuate slots between said adjacent wall surfaces, anannular.

seat around the upper -.perip'her-y of said outer wallmember, and an upstanding ffiange around the outer perimeter of said annular seat, said .slcts being adapted to allowescapeof steam and ,air displaced from within a bottle when hot water is poured into the 'bottle through said opening, and said screw-threads, annular seat ,.and .fiange being adapted to permit sealing of said opening and slots by a single, closure plug when desired.

for incorporation in ra hot-water bottle anda closure plug therefor, 's'aidbconduit comprising an inner wall member of closed formation ,provvideol with internal screw-threads at least at its wall member of closed formation surrounding said inner wall member and spaced thereirom,a plurality of connecting elements spaced around the outer perimeter of said inner walll'meinbe'r v I so :3. For incorporation in a hot-water bottle, a

. V i 4. In combination, a filling conduit adapted 5, lower ,part and defining an opening, an outer .and bridging the space between said'r'nembers,

j and an annular seat around the upper periphery of said outer wall member, the space between said members being adapted to allow escape of air and steam displaced from withina bottle in fwhic'h the filling conduit is incorporated when "hot-water is poured into the bottle through said v opening, and said closure plug comprising a cen- "trail screw threaded part adapted to engage "the outer perimeter of said annular seat, the space between said members being adapted to allow escape of steam and air from within a bottle, in which 'the filling conduit is incorporated, when .hot water :is poured into the bottle through the opening, and said internal screw threads, annular seat, and flange being adapted to permit-sealing of said opening and said space by a single closure plug when desired.

6. A filling conduit as claimed in claim 5, in which the upper surface of saidinner wallmem ber and the adjacent surface of the overtopping part of said outer wall member slope downward- "ly and inwardly towards said opening whereby ,jetsof air and steam issuing from the bottle through the space between said wall members do not flow counter 'to the direction of flow of the hot water -being poured into the bottle through the opening.

"7. For incorporation in a hot-water bottle, fa filling. conduit comprising a central inner member of closed circular formation provided'with internal screw-threads at least "at it'sl'ower part and defining an opening, an outer wall member of closed circular formation surrounding and overtopping said inner wall member in spaced ,re- 'lationship relative thereto, the upper part of the inner surface of said inner wall .member and the inner wall surface of the overtopping part of said outer wall member being in alignment and tapering downwardly and inwardly to "form .a "bearing surface of inverted frusto-conical shape, a plurality of "spaced connecting elements disposed radially with respect to said inner wall memberan'd bridging the space between said members, an annular seat around }the upper periphery of said "outer wall member, and an upstanding flange around the outer perimeter of said annular seat, the space between said members being adapted to allbwescape of steam and air from within a bottle, in which the filling conduit is incorporated, when hot water is poured into the bottle through the opening, and said internal screw threads, annular seat, bearing surface and flange "beinga'dapted to permit sealing of said-opening and said space by a single closure plug when desired. I

-8."'For incorporation in a, hot-water bottlejje. filling conduit comprising a central inner member df 'closed circular formation provided with in- 'ternal screw-thread at least at its lower pa'r'tand defining an opening, an outer wan member of closed circular formation surrounding said inner "wallmember in spaced relationshiprelatiye there to'and projecting above the upper level thereof, a plurality of spaced connectingelements disposed radially with respect to said inner wall member "screw th1-eads of said inner wall n'iernber and 1,5 and bridging f'thespace between 9 an annular seat around the upper periphery of said outer wall member, and an upstanding flange around the outer perimeter of said annular seat, the space between said members being adapted to allow escape of steam and air from within a bottle, in which the filling conduit is incorporated, when hot water is poured into the bottle through the opening, and said internal screw-threads, annular seat and flange being adapted to permit sealing of said opening and said space by a single closure plug when desired.

9. For incorporation in a hot-water bottle, a filling conduit comprising a central inner member of closed circular formation provided with internal screw-threads at least at its lower part and defining an opening, an outer wall member of closed circular formation surrounding said inner wall member in spaced relationship relative thereto, the upper level of said outer wall memher being lower than that of said inner wall member, a plurality of spaced connecting elements disposed radially with respect to said inner wall member and bridging the space between said members, an annular seat around the upper periphery of said outer wall member, and an upstanding flange around the outer perimeter of said annular seat, the space between said members being adapted to allow escape of steam and air from within a bottle, in which the filling conduit is incorporated, whenhot water is poured into the bottle through the opening, and said in ternal screw-threads, annular seat and flange Number Name Date 279,935 Glattsteine June 26, 1883 970,767 Swingle Sept. 20, 1910 1,581,072 Lumsden Apr. 13, 1926 FOREIGN PATENTS Number Country Date 297,140 Great Britain Sept. 17, 1928 305,159 Great Britain Feb. 1, 1929 113,654 Australia Aug. 28, 1941 

